Double glazed panel



Dec. 9, 1952 K. G. FISH ETAL 2,620,522

DOUBLE GLAZED PANEL Filed March 17, 1950 WELL Q18 Hora-18am PatentedDec. 9, 1952 Kenneth R. G. Fish and Richard T. Gent, Wellingborough,England, assignors of one-third to Donald Leslie Boys, Wellingborough,England Application March 17, 1950, Serial No. 150,123 In Great BritainMarch 21, 1949 3 Claims.

This invention relates to double glazed panels.

Double glazed panels consist of two sheets of glass, spaced apart by adistance usually of the order of three eighths of an inch, and are usedto give heat, and to some extent sound insulation. Many attempts havebeen made to produce them in an eflicient and economical form for use inwindows, doors, roof glazing and greenhouses, etc.

The desirable features of such panels arethat the space between theglasses must be entirely free from any moisture, i. e. filled with dryair or other gas, or even a liquid under certain circumstances; and thatas owing to the heat resisting properties of the panel, one sheet ofglass (usually the one outside the building, in the summer and viceversa in the winter) will become hotter than the other causingexpansion, this expansion must be provided for in the design.

One way of achieving this result is to provide an hermetically sealedpanel. Another way is to provide an unsealed type having provision forbreathing and for excluding all moisture and dust. This invention isintended to relate mainly to the sealed type of panel, although it couldbe incorporated in the unsealed type.

For the sealed type of panel two methods have been tried. In the firstof these two sheets of glass, with a suitable spacing frame between arefixed together with some form of adhesive, and dry air introduced intothe space. This type is subject to breakdown due to the expansionconditions mentioned above. Also thereis no really good adhesive forsticking glass to a'isecond material owing to the smooth andsubstantially non-porous surface of the glass. In the second method aspacing frame is provided ieither made from, or covered with, someresilient material such as rubber, and the whole clamped together invarious ways.

The present invention consists of a method of constructing adouble-glazed panel having a sealing strip made from or covered withrubber or other compressible resilient material inserted between the twosheets all round, a metal frame member or members fitted all round overthe sealing strip and sheet edges, in which the metal frame itself isused to compress the sealing strip in assembly and retain it in thecompressed position, the metal frame holding the two edges of the sheetswhile expanding means are forced into a slot in the sealing strip tocompress the resilient material on each side between the expanding meansand the two edges of the sheet. The

expanding means may be formed integral with the metal frame.

The invention further consists in a double glazed panel comprising asealing strip made from or covered with rubber or other compressibleresilient material inserted between two sheets of glass or the like allround and consisting of a portion between the edges of the glass sheetsand a Wider portion outside these edges forming shoulders against whichthe edges of the glass sheets abut, and a metal frame with lips bentover the sheet edges and acting to compress the sealing strip intointimate contact with the surface of the glass sheets, the metal framebeing of E-section, the central limb of the E being inserted in a slotor channel in the sealing strip.

The invention will be further described with I reference to theaccompanying drawings.

Figure l is a transverse cross-sectional view through the edge of adouble glass panel construction before sealing, and

Figure 2 is a similar view of the same panel after sealing.

The sealing strip 2 is shown formed with a slot or channel on theoutside into which fit two L section metal strips 5. The frame 3 is ofE-section and the central limb B of the E is arranged to fit in betweenthe strips 5 so as to force these apart while the outer limbs of the Eslide over the outer faces of the glass sheets I and resist the forcingapart of the glass sheets; hence the parts of the sealing strip betweenthe glass sheets and the L-section metal strips are compressed to makean hermetic seal between the two glass sheets. The air between the glasssheets may be exhausted and replaced with dry air or gas in the usualway.

Various other modifications will be possible within the scope of theinvention.

We claim:

1. A double-glazed panel comprising parallelly aligned sheets of glass,an E-section metal frame retaining said sheets a maximum distance apart,and a resilient sealing strip under compression within said frame andbetween the peripheral portions of said sheets, the central limb of saidE being constituted by an inwardly directed corrugation of the peripheryof said frame and constituting expanding means embraced by said sealingstrip.

2. A double-glazed panel comprising parallelly aligned sheets of glass,an essentially U-section resilient, sealing strip extending between theperiphery of said sheets and formed with outwardly-directed shoulderportions against which the edges of said sheets abut, and an E-sectionmetal frame set round said sheets, the outer flanges of said frameretaining said sheets and the central limb between said flanges enteringand compressing said sealing strip against said sheets.

3. A double-glazed panel as set. forth in claim:

2, further comprising L-section strips of tough material interposedbetween said frame and said. 1103 and the other arm of said L enteringbetween said sealing strip and said central 1imb..

REFERENCES CITED The following references are of record in the file ofthis patent:

5 UNITED STATES PATENTS Number Name Date 1,975,895 Geyer Oct..9, 19342021,1 79 Fox Nov; 19, 1935 2,025,770 Parkinson et a1. Dec. 31, 193523049528 Stroud Aug. 4, 1936 2,103,532. Hunter Dec. 28, 1937 2,244,491"

KENNETH: R. G. .15

RICHARD T. GENT.

Englehart June 3, 1941

